1. Department of Otolaryngology-Head and Neck Surgery; Johns Hopkins University School of Medicine; Baltimore MD
2. Coastal Ear Nose and Throat; Neptune NJ
3. Department of Environmental Health Sciences; Johns Hopkins University Bloomberg School of Public Health; Baltimore MD
4. Welch Center for Prevention, Epidemiology, and Clinical Research; Johns Hopkins Medical Institutions; Baltimore MD
5. Department of Health Behavior and Society; Johns Hopkins University Bloomberg School of Public Health; Baltimore MD
6. Institute for Global Tobacco Control; Johns Hopkins University Bloomberg School of Public Health; Baltimore MD